[ntp:questions] LAPIC timer and PIT

Spoon root at localhost.invalid
Fri Aug 31 09:55:03 UTC 2007


On a typical x86 motherboard, are the PIT (Programmable Interval Timer) 
and LAPIC (Local Advanced Programmable Interrupt Controller) timer 
driven by the same crystal?

In other words, will ntpd compute a similar frequency offset if I switch 
from PIT to LAPIC timer?

Is the LAPIC timer in any way "better" than the PIT (resolution? 
precision? accuracy? overhead? anything else?)


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